Home / 131,400.20-181,338.86-80,396.96

Finding the Fourth Proportional to 131,400.20, 181,338.86 and 80,396.96

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Solution

The fourth proportional to 131,400.20, 181,338.86 and 80,396.96 is: 110,951.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,400.20 : 181,338.86 = 80,396.96 : x
  2. Step 2: Convert to fraction form
    131,400.20/181,338.86 = 80,396.96/x
  3. Step 3: Cross multiply
    131,400.20x = 181,338.86 × 80,396.96
  4. Step 4: Simplify right side
    131,400.20x = 14,579,093,073.87
  5. Step 5: Solve for x
    x = 14,579,093,073.87/131,400.20
  6. Step 6: Final answer
    x = 110,951.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.